Approximation theory in variable exponent Lebesgue spaces explores how well functions can be approximated when the underlying integrability exponent varies pointwise. Unlike classical Lᵖ spaces with a ...

REFERRING to Prof. H. C. Plummer's letter on “An Approximation to the Probability Integral,” published in NATURE of October 25, the following alternative way of ...

Using the path-integral formalism, Ryan Parker, Mark Stedman and Luca Capriotti develop an accurate and easy-to-compute semi-analytical approximation for a general class of default intensity models.